Perhaps you should try some spelling variations:
york volunteer » worker volunteer, mock volunteers, words volunteer
form volunteer » foot volunteer, from volunteer, forming volunteer
its regiment » 9th regiment, das regiment, ist regiment
his regiment » his retirement, first regiment, _ regiment

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "7th new ((york volunteer) OR (form volunteer)) ((its regiment) OR (his regiment))".
• Adding a wildcard symbol may retrieve word variants: 7th new ((york volunteer) OR (form volunteer)) ((its regiment) OR (his regiment))*.